Create file of published references

A file of published references that we can refer to specific publications for warnings, etc.

Filename: REFERENCES.yaml / .md

Perhaps some Yaml/md format as:
```
---
- code: [short code here]
  ref: [full academic reference here]
  cite: [preferred citation format]
- code: [short code here]
  ref: [full academic reference here]
  cite: [preferred citation format]
```